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Reika [66]
3 years ago
12

Vector u has its initial point at (21, 12) and its terminal point at (19,-8). Vector v has a direction opposite that of u, whose

magnitude is five times
the magnitude of v. Which is the correct form of vector v expressed as a linear combination of the unit vectors i and j?
A.
v= -101 + 4j
B.
v=-0,41 - 4j
C.
v=0,41 +4j
D.
v = 15i + 100)
Mathematics
1 answer:
Svetllana [295]3 years ago
6 0
B
v=-101+4j
Because i had that question like literally right now
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Find the value of x. Round the length to the nearest meter
Oksana_A [137]

Answer:

we need a picture to help

7 0
3 years ago
An object is dropped (g = 9.80 m/s ^ 2) and falls for 5.00 s before hitting the ground. How fan has the object fallen
mixer [17]

Answer:

122.5 m

Step-by-step explanation:

s = ½g.t²

= ½×9.8×5² = 122.5

5 0
2 years ago
Which equation represents the line that passes through (-3,5) and is parallel to the graph of y= -2/3x+5
Nostrana [21]
Parallel to the graph of y = -2/3x + 5
means that it has the same slope

Rewrite
y = -2/3x + b
plug in the given coordinates to solve for b
5 = -2/3(-3) + b
5 = 2 + b
subtract 2 from both sides
3 = b

plug that back into the equation
y = -2/3x + b
y = -2/3x + 3

The answer is <span>B. y= -2/3x+3</span>

This line is parallel to y = -2/3x + 5 and it passes the point (3, 5).

Hope this helps :)
4 0
3 years ago
I need help on Part B and C on question 2
kap26 [50]

Answer:

The answer to your question is

Part A. Archimedes grades 6 1/4 tests per day

Part B. 8 19/32 days

Part C.  6  26/29 days

Step-by-step explanation:

Part A

Total time = 6 2/5 days

Number of tests = 40 tests

Process

1.- Convert the mixed fraction to improper fraction

                 6 2/5 = (30 + 2) / 5 = 32/5

2.- Divide 40 by 32/5

                40/1  / 32/5   = (40 x 5) / (32 x 1)

                                      = 200 / 32

Simplify

                                        100 / 16 = 50/8 = 25/4

3.- Convert 25/4 to mixed fractions

                                       6      

                                4   25            

                                        1

                   25/4 = 6 1/4

Archimedes grade 6 1/4 tests per day

Part B

15 more tests

Total time = 32/5

Total tests = 40 + 15 = 55

Process

1.- Divide 55 by 32/5

                                  55 / 1  /  32 /5    = (55 x 5) / (32 x 1)

                                                             = 275 / 32

                                                             

2.- Convert 275/32 to a mixed fraction

                                                 8                                  

                                      32   275

                                             256

                                                19

Result    8 19/32 days

Part C

1.- Divide 55 by 7.25

                                         50 / 7.25     =    5000 / 725

                                                  6

                                725    5000

                                        - 4350

                                            650    

Result 6 650/750 = 6  26/29

3 0
3 years ago
9. Jack is learning to save, spend, and give his money away to charities. He has determined to give 10% of his summer job earnin
Kamila [148]

Answer:

$2560

Step-by-step explanation:

if 10%=256

then 10 times the amount 100% is 2560

4 0
3 years ago
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